IFSTA 7 question and answers 2023

IFSTA 7 question and answers 2023 Which product of combustion acts as a chemical asphyxiant by excluding oxygen from the blood, leading to hypoxia of the brain and tissues?

• Carbon dioxide (CO2)
• Carbon monoxide (CO)
• Aerosolized fuel particles
• Hydrogen cyanide (HCN) - Correct Answer B

Combustion can occur within a range of concentration of fuel vapor and air; this range is

referred to as the:

• vapor pressure range.
• surface to mass range.
• flammable (explosive) range.
• oxidation (combustion) range. - Correct Answer C

Which statement describes the factor that MOST influences compartment fire development?

• Whether the fire is fuel-limited or ventilation-limited
• Whether the fuel is cellulose-based or petroleum-based
• Ratio of square footage to ceiling height of the compartment
• Ambient temperature and wind speed outside the compartment - Correct Answer A

An extinguishing agent, such as dry chemical or Halon-replacement agent, terminates

the combustion reaction by:

• cutting off the oxygen supply to the fuel.
• interfering with the chemical chain reaction.
• cooling the fuel below the ignition temperature.
• reacting with the fuel to create a fire-resistant layer. - Correct Answer B

Materials that burn at normal oxygen levels will burn more intensely in _____ atmospheres.

• flaming
• nonflaming
• oxygen-enriched
• oxygen-deficient - Correct Answer C

Which situation would likely be granted an exception to the rule that prohibits filling an unshielded air cylinder while a firefighter is wearing the SCBA?

• The SCBA was manufactured within the past five to ten years.
• A rapid intervention crew (RIC) is rescuing a trapped or incapacitated firefighter.
• The firefighter filling the empty cylinder is wearing full structural personal protective

equipment.

• A firefighter with a higher rank than the firefighter wearing the SCBA cylinder is

available to perform the refill. - Correct Answer B 1 / 2

What is a general safety precaution to take when refilling an SCBA cylinder?

• Wear full structural fire fighting PPE.
• Fill the cylinder as quickly as possible.
• Perform a hydrostatic test on the cylinder.
• Check the hydrostatic test date of the cylinder. - Correct Answer D

Which piece of information must be included on the permanent compliance label inside each piece of PPE?

• Firefighter's name
• Department name
• Cleaning precautions
• Wearing instructions - Correct Answer C

Which type of breathing air source would be found inside a high-rise building?

• Stationary fill system
• Auto-cascade fill system
• High-rise specific cascade system
• Firefighter Breathing Air Replenishment System - Correct Answer D

Annual SCBA inspections and maintenance should be performed by:

• a company officer.
• all available firefighters.
• specially trained, factory-qualified technicians.
• the highest-ranking fire department personnel. - Correct Answer C

After each use, the SCBA facepiece should be:

• cleaned, dried, and placed out of service.
• washed with warm water and a mild disinfectant.
• sanitized using a machine built specifically for facepieces.
• sent to the manufacturer for a commercial-grade cleaning. - Correct Answer B

When donning an unmounted SCBA, the SCBA unit should be:

• stored in an outside compartment of the apparatus.
• placed on the ground with all of the straps extended.
• stored in a specialized compartment inside the apparatus.
• placed behind the firefighter with all of the straps tightened. - Correct Answer B

Immediately prior to donning SCBA, firefighters should:

• record inspections in the SCBA log.
• perform a hydrostatic test on the cylinder.
• check to make sure that the bypass valve is disabled.
• check the cylinder gauge to make sure the cylinder is full. - Correct Answer D

All PPE designed for structural fire fighting must meet the requirements of:

A) NFPA 1002.

• NFPA 1006.
• / 2